Miniproposals

Miniproposal: 679 Date Filed: 11/28/2011 Title: Investigation of zonal flows and interaction with energetic particle induced geodesic acoustic modes First Author: David Pace Session Leader: David Pace (shots 1-13) Session Leader: Jim Terry (shots 1-13)

Engineering Operator Run Comment

MP679:Investigation of zonal flows and interaction with energetic partic

Session Leader Plans

Entered: Feb 9 2012 08:49:57:523AM

Author: David Pace

MP679: Investigation of zonal flows and interaction with energetic particle induced geodesic acoustic modes Objective: The goal of this experiment is to conclusively identify any relationship between zonal flows and geodesic acoustic modes (GAMs), including the possibility of an energetic particle-induced GAM. This will be accomplished by reproducing the unique GAM feature from a past experiment, and then determining its stability through modification of the ion cyclotron resonance heating (ICRH) tail ion distribution. Experimental Team: PhysOp - S. Wukitch GPI - J. Terry and S. Zweben Thomson - Y. Ma and J. Hughes HiREX-SR/AXUV - M. Reinke Advisor - S. Wolfe Polarimeter - W. Bergerson, D. Brower, and X. Peng CECE - A. White and C. Sung Edge CXRS - B. Lipschultz and M. Churchill Face on Skype - D. Pace Fast TCI - J. Irby and C. Kasten Reflectometer - S. Baek DNB/FILD - R. Granetz Edge Ti Probes - D. Brunner and B. Labombard PCI - E. Davis CNPA - I. Faust Special Setup: 10 psi 4He in the NINJA plenum Backup Plan: If we are unable to produce the desired GAM-like feature, then Ma will take over as Session Leader to run strike point sweeps as part of an L-H transition experiment. These plasmas will begin with the discharges as developed throughout the day. Diagnostic Gas Puffing Priorities: We have three diagnostic systems that require an independent gas puff. In order to control (or reproduce) the resulting density perturbation from these puffs, we will operate the systems according to the following priority. (1) GPI at outer midplane (2) X-point GPI (3) Edge CXRS The standard GPI (system 1) is absolutely required. If the perturbation of the additional gas puff for the X-point GPI is acceptable, then we will try to add a third puff for the Edge CXRS. Between-shot Analysis: We will identify the GAM feature by looking for coherent fluctuations in the f < 10 kHz range on a variety of diagnostics. The Mirnov coils and GPI photodiodes provide immediate feedback. Other fluctuation diagnostics will are similarly capable of identifying such a feature. Run Plan: (1) HiREX-SR Calibration: 1-2 shots - Reinke has identified a good calibration shot from this week: 1120207021, segment 3 - the reported diagnostic setup from shots is 1 psi Ar in B-SIDE-LOWER (~100 ms, 0.3-0.4 seconds) - the HiREX-SR group may request modifications to this based on the previous day's results (2) Reference Discharges: 3-5 shots (2a) Reproduce shot 1110114026 - B = 5.3 T, Ip = 1.0 MA, n_e,bar = 7 x 10^19 m^-3, LSN - all parameters, including ICRH power ramp, reproduced from this shot - it is noted that the RF frequencies are different today (2b) Reproduce shot 1110114032 - B = 4.6 T, Ip = 0.9 MA, n_e,bar = 7 x 10^19 m^-3, LSN - all parameters reproduced (3) RF Power Scan: 3-5 shots - If shot 2a is deemed valuable -> shot 3a - if shot 2a is undesirable -> shot 3b (3a) Setup shot 2a - if NO L-H transition in 2a, then extend RF power ramp to higher values - if L-H transition in 2a, then slow/decrease the RF power ramp (3b) Begin with setup of shot 2a, but adjust to B = 6.1 T and Ip = 1.15 MA - if NO L-H transition in 2a, then extend RF power ramp to higher values - if L-H transition in 2a, then slow/decrease the RF power ramp (4) GPI Acquisition of ICRH Turn-off: 1-2 shots - Begin with shot parameters from section 3 - ICRH begins before the GPI camera, maintains flattop power at a level determined from step 3 - The ICRH turns off in the middle of the GPI camera acquisition (timing determined by Terry) (5) GPI Acquisition of ICRH Turn-on: 1-2 shots - Begin with shot parameters from section 4 - ICRH turns on (as sharply as possible) in the middle of the GPI camera acquisition (6) Density Alteration to Avoid L-H Transition: 2-4 shots - Begin with shot parameters from section 5 - program RF power ramp as used in section 1, or developed thus far - adjust density programming based on Ma/Hughes assessment of the best way to avoid an L-H transition (7) Density Alteration to Achieve L-H Transition: 2-4 shots - Begin with shot parameters from section 5 - program RF power ramp as used in section 1, or developed thus far - adjust density programming based on Ma/Hughes assessment of the best way to achieve an L-H transition (8) Items of Interest: 5 shots - Revisit most intriguing shot of the day (8a) extend RF power to higher/lower levels (8b) extend density to higher/lower values

Physics Operators Plans

Entered: Feb 8 2012 03:34:02:820PM

Author: Steve Wukitch

----------------- Engineering Setup ----------------- Run begins at 09:00 and ends at 17:00 Power systems as on: 1120207021 Acoil: +Dtop -Dbot -Jtop +Jbot (standard) Hybrid Enabled Gas setup: fill B-Top with 6 psi D2 Hybrid enabled (PG4) fill B-side lower with 1 psi Ar Hybrid DISABLED (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) fill H-bottom with 15 psi D2 Hybrid DISABLED (PG5) leave B-div as is Hybrid DISABLED (PG6) leave H-div as is Hybrid DISABLED (PG7) fill NINJA with 10 psi He DISABLED Enable gate-valves and shutters: ECE, VUV, HiREX Sr, Xeus, Loweus Leave z-bolo shutter as is (should be open) Torvac gatevalve toggle (yes/no): no Boronization(yes/no): no Overnight ECDC (yes/no): yes ICRF(yes/no): yes LH(yes/no): no Cryopump (yes/no): no DNB (yes/no): yes Vessel temperature: 35/35/35 ------------------------------ ECDC Parameters (if requested) ------------------------------ gas and pressure: D2 at 2e-4 Torr sweep: 44/45/103 cm scan: 20/120 s ----------------------------- Plasma setup ---------------------------- Begin with shot 1120207021. ================================== Run Plan: see Session Leader Plan ==================================

Session Leader Summaries

Entered: Feb 9 2012 06:08:09:840PM

Author: David Pace

The shots we acquired today are very informative concerning the coherent, low frequency (f < 10 kHz) mode that sometimes appears prior to an L-H transition. Shots 003 and 004 produced this mode at seemingly large amplitude. In shot 004, it appears as though the mode downshifts in frequency following the L-H transition. On shot 004, the mode was observed on nearly every fluctuation diagnostic. Based on FRCECE data, it appears as though the fluctuations extended into the core. Divertor Langmuir probes identify the same fluctuation, which is further consistent with GPI observations of it extending into the scrape-off layer. Even the D_alpha traces show a periodic set of spikes with a period equivalent to that of the mode. The mode is not as strongly visible in shots 012 and 013. The reflectometer does see it, however, and it may appear at a higher frequency (6 kHz) compared to that of shot 004 (3.5 kHz). Line-integrated density is lower in 012 and 013 compared to 004. We further noticed high frequency (f > 700 kHz) during the H-mode phase of shot 004. Both the PCI and Magnetics systems identify this behavior, which may be toroidal Alfven eigenmodes. This fluctuation is modified by sawtooth crashes. Preliminary Listing of New Results: (1) This mode exhibits temperature fluctuations. (2) This mode extends into the core plasma. (3) High frequency MHD is produced in the H-mode phase of these discharges. (4) Demonstrated simultaneous operation of many fluctuation-resolving diagnostics. The value of each discharge is significantly improved due to the volume of quality measurements acquired. Initial Thoughts Concerning Targets for Future Experiment: (1) It seems valuable to modify the ICRH in the manner originally planned for today. We should have a flattop RF power trace for a few fast ion slowing down times (~ 300 ms) before sharply shutting off the RF. This shut off should occur in the middle of the GPI camera acquisition. We would then monitor the effects on the coherent modes as a function of the ICRH tail ion slowing down. (2) The opposite of the previous note, we should sharply turn ON the RF at the beginning of the GPI camera acquisition and then monitor the situation for a few tail ion slowing down times. With a flattop RF power, this might provide clues as to the relevance of the tail distribution in producing the coherent mode. (3) After analyzing today's measurements, we should target a specific plasma parameter scan that is believed to alter the stability and/or drive for this low frequency mode. This should contribute to the understanding of whether the mode affects the timing of the L-H transition. Gratitude: Thank you to everyone for participating through the end of the day. We made the most of every shot received.

Entered: Feb 10 2012 11:28:45:050AM

Author: Jim Terry

This is a summary of run 1120209 which featured MP 679 "Investigation of zonal flows and interaction with energetic particle induced geodesic acoustic modes". See also the more extensive Session Leader Summary from David Pace with whom I was co-session leader. This is my take on the run. There were four useful shots addressing the MP objectives; the rest of the day was spent fixing EF power supplies and trying to get a locked mode shot for calibration of the rotation diagnostics. The shot list of those four shots is: 003 - 5.2 T, 1.0 MA, preRF NL04=3.3e19; 3 ELMfree H-mode periods; low freq (~3 kHz) mode seen on edge GPI views 004 - 5.2 T, 1.0 MA, preRF NL04=3.3e19; 2 ELMfree H-mode periods, low freq (~3 kHz) mode seen on many fluctuation diagnostics; the mode starts at an RF power of 1.4 MW and persists thru the L-H transition into the H-mode. The density increases with the onset of the mode. 012 - 5.2 T, 1.0 MA, preRF NL04=3.2e19; multiple ELMfree H-mode periods, low freq mode observed on magnetics, but nothing on GPI or other fluctuation diagnostics. 013 - 5.2 T, 1.0 MA, preRF NL04=3.1e19; multiple ELMfree H-mode periods, 2.4 kHz mode observed on all R columns of the GPI; low freq mode also seen on magnetics, soft xrays, and possibly the 50GHz reflectometer. Most of the attention was focussed on shot 004 since so many diagnostics observed the low frequency mode. It is even observed on the "monitor" Dalpha signals as periodic spikes (see logbook entry for shot 004). I point out that this signal is heavily weighted to what is is emnitted from the inboard SOL, so the implication is that the mode is strongly perturbing the innerwall SOL.

Physics Operator Summaries

Entered: Feb 9 2012 05:09:27:683PM

Author: Steve Wukitch

The startup was reasonably reliable for the limited number of discharges today. Reloading 1110114026 successfully reproduced the plasma of interest once S. Wolfe corrected a problem I introducted (zeroed out the density controller). We ran into a power supply issue after a few interesting plasmas. EF1U power supply would not reset and left the supply in a disabled mode for shots 007 and 008. The problem was traced to a failed solid state relay on the master control board - it was partially shorted. The failed relay was replaced and the supply was successfully tested in 009 but EF1L failed. This was traced to a electromechanical relay that switches between hybrid and PLC control. The relay was cycled and both EF1U and EF1L were successfully tested in 010. For good measure IGOR hung in 011 resulting in another no power shot. 5 plasmas 0 fizzles 2 duds 2 early disruptions 4 no power ==== 13 total

Session Leader Comments
Feb 9 2012 08:55:55:440AM		David Pace	If anyone is interested, you can use InSpect for a quick spectral analysis. The wiki also has notes on the method for reviewing GPI photodiode channels with InSpect. The wiki page for InSpect, http://www.psfc.mit.edu/research/alcator/cmodwiki/index.php/InSpect
Feb 9 2012 09:11:00:063AM	1120209001	David Pace	Thank you all for participating! Attempt to reproduce a shot of interest: 1110114026 ++ Locked mode calibration will come later ++
Feb 9 2012 09:39:25:397AM	1120209001	Jim Terry	GPI set up: NINJA set up with 481 Torr of He^4; timing trigger at 0.7 s for 0.1 s duration; both Kdiv and AB_lim to be fired. Apds set to take data from 0.8 to 1.3 s. Phantom and Phantom2 set to trigger at 0.8 s with 50000 (30000) frames. Disrupted early. 7.7 Torr-l puffed, will back off to 0.09 s duration. In order to look for the low frequency feature in the APD emisison signals: .r /home/terry/gpi/APDs/kth_apd.pro KTH_APD,1110114026,/ksplit,/knorm,df_req=0.5,omit=1 The df_req=0.5 is important to get decent resolution at low (~10 kHz) frequencies.
Feb 9 2012 09:37:44:443AM	1120209002	David Pace	Reproduce a shot of interest: 1110114026 Result: disruption Next Shot: try again Image is autopower from Mirnov coil BP02_GHK,
Feb 9 2012 09:27:49:940AM	1120209003	David Pace	Reproduce a shot of interest: 1110114026 Result:
Feb 9 2012 11:06:47:927AM	1120209003	Jim Terry	GPI set up: NINJA set up with 481 Torr of He^4; timing trigger at 0.7 s for 0.1 s duration; both Kdiv and AB_lim to be fired. APDs set to take data from 0.8 to 1.3 s. Gas hits at 0.846 s 7.4 Torr-l puffed Phantom and Phantom2 set to trigger at 0.8 s with 50000 (30000) frames. Good shot - multiple ELMfree H-modes See 3-4 khz feature on 2 innermost columns Here is the spectrum from col 1 (innermost)
Feb 9 2012 10:24:38:253AM	1120209004	David Pace	Repeat shot 1120209004 Result: fantastic. Coherent feature appears leading up to the L-H transition. This is at f ~ 3 kHz (passing across a noise band shown in the figure). We also see the fluctuations in FRCECE as posted. Image is cross-power between BP1T_GHK and BP2T_GHK, Image is cross-power from FRCECE,
Feb 9 2012 12:04:02:120PM	1120209004	Jim Terry	GPI set up: NINJA set up with 481 Torr of He^4; timing trigger at 0.675 s for 0.1 s duration; both Kdiv and AB_lim to be fired. APDs set to take data from 0.8 to 1.3 s. Gas hits at 0.818 s 7.4 Torr-l puffed Phantom and Phantom2 set to trigger at 0.8 s with 50000 (30000) frames. Good shot - 2 ELMfree H-modes, 1st transition is at 1.12 s Excellent 4 khz feature on most columns for the L-mode time duration we get the following: spectrum from col 1 (innermost) spectrum from col 4 - note the clear harmonic at ~6 kHz and here is the conditional kf spectrogram from col 4; note that the k_pol of the mode is clearly not zero but is propagating in the ion drift direction spectrum from col 5 Here is the freq spectrum from col 2 during the ELMfree H-mode. Note the lower freq of the mode (now 2.5 kHz) compared to the 3 kHz during the L-mode period. This is consistent with what is seen on the magnetics and ECE. spectrum from col 2 (during H-mode)
Feb 9 2012 03:27:14:970PM	1120209004	Jim Terry	The low frequency oscillation is also seen on the edge D_alpha and edge HeII signals. Here I show a ~5 ms window of the edge D_alpha during the L-mode phase. Note the freq is 3.5 kHz. Here I show a ~5 ms window of the edge D_alpha during the H-mode phase. The intensity is much reduced, but the oscillation is still there with a freq of ~2.3 kHz
Feb 9 2012 10:14:45:917AM	1120209005	David Pace	Locked mode calibration shot HiREX-SR: time to shine
Feb 9 2012 10:48:20:350AM	1120209007	David Pace	Locked mode calibration shot HiREX-SR: this is the time to shine
Feb 9 2012 11:16:34:337AM	1120209008	David Pace	++ Locked mode calibration shot ++ Expt. Status: Just about all possible fluctuation diagnostics identify the coherent feature near 3-5 kHz. This includes the polarimeter, reflectometer, and ECE systems. We will obtain a locked mode calibration shot, and then repeat shot 004 to optimize the GPI coverage of the L-H transition.
Feb 9 2012 05:00:53:970PM	1120209012	David Pace	++ Full Steam Ahead ++ Repeat shot 004 Result: good shot.
Feb 10 2012 11:35:14:493AM	1120209012	Jim Terry	GPI set up: NINJA set up with 481 Torr of He^4; timing trigger at 0.905 s for 0.11 s duration; both Kdiv and AB_lim to be fired. APDs set to take data from 1.05 to 1.5 s. Gas hits at 0.846 s 7.4 Torr-l puffed Phantom and Phantom2 set to trigger at 1.05 s with 60000 (60000) frames. gas hits at 1.05 s Good shot - multiple L-H transitions in GPI data windows No evidence of the low freq mode in the GPI data
Feb 9 2012 05:11:15:477PM	1120209013	David Pace	Plan: Repeat shot 012, adjust GPI camera acquisition to capture more of the L-mode Good shot. End of run.
Feb 10 2012 12:05:50:820PM	1120209013	Jim Terry	GPI set up: NINJA set up with 481 Torr of He^4; timing trigger at 0.855 s for 0.11 s duration; both Kdiv and AB_lim to be fired. APDs set to take data from 1.00 to 1.5 s. Gas hits at 0.846 s 7.4 Torr-l puffed Phantom and Phantom2 set to trigger at 1.00 s with 60000 (60000) frames. gas hits at 1.00 s Good shot - multiple L-H transitions in GPI data windows Good X-point camera GPI data and midplane Excellent 4 khz feature on all R columns of the APD GPI for the H-mode time duration we get the following: spectrum from col 1 (innermost) (compare it to the spectrum from shot 004) On most of the R columns the k_pol of the mode is indistinguishable from 0, but for column 4 it is clear shifted toward the ion diamagnetic drift direction as shown here in the conditional kf spectrogram:

Physics Operator Comments
Feb 9 2012 09:17:43:787AM	1120209001	Steve Wukitch	001 demand: load reference shot 1110114026; startup from 1120208029 seg 1 load reference shot seg 2 and seg 2 is active Load at 9-Feb-2012 09:09:54.00 result: no power - PS next: retry with all supplies
Feb 9 2012 10:24:13:013AM	1120209002	Steve Wukitch	demand: load reference shot 1110114026; startup from 1120208029 seg 1 load reference shot seg 2 and seg 2 is active Load at 9-Feb-2012 09:09:54.00 result: plasma - early disruption main gas flat out from 0.1 s why? - dpcs next: retry when recalling old shot in nl04 should be 1. in ef2_by_ef4 ef2_U and _L should be 0.5 use call and not edit Load at 9-Feb-2012 09:49:34.00
Feb 9 2012 10:04:57:870AM	1120209003	Steve Wukitch	003 demand: load reference shot 1110114026; startup from 1120208029 seg 1 result: plasma - ELM free H-modes argon level okay during H-mode but too low for next: repeat with Ar puff to 80 ms Load at 9-Feb-2012 10:04:16.00
Feb 9 2012 10:39:51:003AM	1120209005	Steve Wukitch	demand: locked mode reference - 1120207021 result: disruption shy of 0.8 s too short for hirex-sr next: load lock mode reference 1120207012 load seg 3 from 1120207012 into seg 4 pg1 is set to 30 V and width is 0.3 s Load at 9-Feb-2012 10:39:12.00
Feb 9 2012 10:48:35:013AM	1120209006	Steve Wukitch	demand: lock mode reference 1120207012 result: plasma - not enough Ar next: repeat locked mode raise PG1 to 70 V from 30 V for 0.3 s starting at 0.3 s Load at 9-Feb-2012 10:47:39.00
Feb 9 2012 11:14:08:337AM	1120209007	Steve Wukitch	demand: repeat of 006 with more Ar (70 V up from 30 V for 0.3 s starting at 0.3 s) result: dud why? no EF1U next: repeat with EF1U
Feb 9 2012 12:49:35:803PM	1120209008	Steve Wukitch	demand: repeat of 006 with more Ar (70 V up from 30 V for 0.3 s starting at 0.3 s) result: dud no EF1U next: investigate EF1U supply
Feb 9 2012 01:26:13:510PM	1120209008	Steve Wukitch	Still holding... Still investigating EF1U supply...
Feb 9 2012 03:26:42:627PM	1120209008	Steve Wukitch	Time for EF1U and EF1L test
Feb 9 2012 03:47:40:653PM	1120209009	Steve Wukitch	demand: EF1U and EF1L PLC current test result: EF1U worked but EF1L did not work properly next: checking EF1L
Feb 9 2012 04:36:48:450PM	1120209010	Steve Wukitch	demand: EF1U and EF1L PLC current test result: successful test next: plasma attempt - repeat 004 with lower target density
Feb 9 2012 04:58:02:393PM	1120209011	Steve Wukitch	011 no power test
Feb 9 2012 05:00:57:143PM	1120209012	Steve Wukitch	demand: repeat of 004 switch from seg 4 to seg 2 and nl04 to 3.5e10^19 Load at 9-Feb-2012 16:30:36.00 result: plasma into rampdown next: repeat
Feb 9 2012 05:08:36:070PM	1120209013	Steve Wukitch	demand: repeat of 012 result: plasma next: EoR

Engineering Operator Comments
Shot	Time	Type	Status	Comment
1	09:12:39:023AM	Plasma	Bad	No Power Shot - Cap Banks not charged
2	09:22:43:500AM	Plasma	Ok
3	09:50:33:570AM	Plasma	Ok
4	10:05:06:267AM	Plasma	Ok
5	10:23:51:477AM	Plasma	Ok
6	10:40:13:510AM	Plasma	Ok
7	10:58:12:377AM	Plasma	Bad	EF1 Upper didn't fire
8	11:38:25:953AM	Plasma	Bad	No EF1U again
9	03:32:36:377PM	Test	Ok	EF1-UL-PLC Test
10	04:25:49:660PM	Test	Ok	EF1 UL test
11	04:44:44:533PM	Plasma	Bad	igor problem
12	04:52:56:567PM	Plasma	Ok
13	05:06:17:010PM	Plasma	Ok

System Availability

Feb 9 2012 09:12:18:343AM

System Available Comment Availability Changed Owner Description Who Can Change Active MHD no secured - tagged out Jun 02 2008 11:03AM (sears) Joe Snipes Active MHD Antenna golfit BES yes BES system is online Nov 22 2011 02:21PM (bespam) Bill Rowan Beam Emission Spectroscopy bespam,liao,rowan Bolometers yes Midplane and LEDGE-AX diodes functioning properly. Midplane bolometers working and calibrated. LEDGE/DIV bolometers working, but toaster calibration not yet complete. Jan 23 2012 12:02PM (mlreinke) Matt Reinke Bolometers hutch,mlreinke Boronization no Bottle Removed. System has been tested and will be ready once bottle is installed Jan 09 2012 06:32AM (dekow) Jim Irby Boronization dekow,irby CECE no   Jan 06 2012 03:48PM  Anne White Correlation ECE whitea CNPA yes Multiple channel CNPA available, no safety risk for in-vessel access Apr 14 2011 12:01PM (parker) Ron Parker Compact Neutral Analyzer parker Cryopump - Upper Divertor yes Operational. He level meter not working on 500L dewar. Frank will take manual readings. Jan 11 2012 11:46AM (labombard) Brian LaBombard Upper Divertor Cryopump dekow,irby,labombard CXRS yes core-CXRS system is online Nov 22 2011 02:21PM (bespam) Bill Rowan Charge Exchange Spectroscopy bespam,blip,liao,rachmcd,rowan CXRS edge yes Michael CHurchill has primary responsibility at the moment Apr 19 2011 11:44AM (blip) Bruce Lipshultz Measurement of CXR light in the pedestal region at both the high- and low-field sides blip,rmchurch D Alpha yes \ha2_bright is available; \SPECTROSCOPY::TOP.VUV.VIS_SIGNALS:MCP_VIS_SIG1 is not available Jul 01 2009 09:45AM (terry) Jim Terry Balmer Alpha Monitor irby,terry,wolfe Dalsa no system is is installed and aligned, but not functional (appears to be a broken cable) Dec 05 2011 02:41PM (marmar) Earl Marmar Visible Bremsstrahlung Imaging marmar Disruption Mitigation no gas jet valve disabled on 2011/04/13 Apr 13 2011 02:04PM (granetz) Robert Granetz Gas Jet granetz,whyte Divertor IR no   Mar 06 2007 10:50AM  Glen Wurden Divertor IR Digital Video gwurden,terry Divertor IR Spectroscopy no   Mar 06 2007 10:51AM  Glen Wurden Divertor IR Spectroscopy gwurden,terry DMBolo AXUV diodes yes Diodes are taking usable data. Not all post-processing code is working yet. Feb 01 2012 01:24PM (golynyk) Geoff Olynyk Set of six AXUV diodes in a toroidal array of midplane wall boxes. golynyk,granetz,mlreinke,whyte DNB yes   Dec 01 2011 11:46AM (granetz) Robert Granetz Diagnostic Neutral Beam dterry,granetz,mochung ECDC yes Operational as of 11/19/11 Nov 22 2011 03:01PM (irby) Jim Irby 2.45 GHz, 3 kW, discharge cleaning system dekow,irby,pfeiffer FRC-ECE no Power off to RF and IF sections- Power on to DA Apr 11 2011 02:54PM (phillips) Perry Phillips Heterodyne ECE-32 channels bespam,liao,phillips,rowan,whitea FTCI no   Jan 06 2012 04:36PM  Jim Irby Fast two-color interferometer irby G-Side Ratiomatic yes   Dec 02 2011 12:24PM (toland) Brian LaBombard G-side ratiomatic ionization gauge labombard,toland Glow Discharge no Power supply unplugged and redtagged, HV cables removed Apr 14 2011 08:03AM (dekow) Jim Irby 1 kV, 5 A, glow discharge system dekow,dterry,irby GPC yes Using new preamps. Nov 30 2011 07:51AM (hubbard) Amanda Hubbard ECE Polychromater hubbard GPC2 yes Dewar cold. Nov 21 2011 09:55AM (hubbard) Amanda Hubbard ECE Polychromater hubbard GPI yes The Xpt-view, the midplane-view cameras are operational. The innerwall GPI (coupled to the fast-diodes) is available. Jul 01 2009 09:45AM (terry) Jim Terry Gas Puff Imaging terry,zweben H/D yes system is functional and taking data Dec 05 2011 02:42PM (marmar) Earl Marmar H/D Ratio marmar HEAT yes   Jan 09 2012 06:32AM (dekow) Gary Dekow - Machine Heaters - burke,dekow Hirex Jr yes Hirex-Jr has been installed Jun 28 2010 03:36PM (rice) John Rice High Resolution X-Ray ince,rice Hirex Sr yes Installed and aligned. Will be available for Ti/Vr profiles after focusing tests and locked modes are taken. Dec 06 2011 08:21AM (ypodpaly) John Rice High Resolution X-Ray cgao,ldelgado,rice,ypodpaly HXR yes 32 Channels operational,, no safety risk for in-vessel access Apr 14 2011 12:05PM (parker) Ron Parker Hard X-Ray Array faust,parker,schmidt ICRF D-Antenna no secured Apr 14 2011 08:55AM (wukitch) Steve Wukitch D-port antenna wukitch,ylin ICRF E-Antenna no secured Apr 14 2011 08:55AM (wukitch) Steve Wukitch E-port antenna wukitch,ylin ICRF J-Antenna no secured Apr 14 2011 08:56AM (wukitch) Steve Wukitch J-port antenna wukitch,ylin Impurity Spectroscopy yes Being upgraded with better optics and new spectrographs. Dan Miller has primary responsibility. Apr 19 2011 11:46AM (blip) Bruce Lipshultz Measurement of recycling light and impurity source rates at multiple surfaces around the tokamak blip,miller Laser Blow-Off yes Operational and tested Jan 06 2012 03:50PM (g) Martin Greenwald Impurity Injection System g,nthoward Lower Hybrid no LH HV Breaker Opened and Tagged, TPS Upgrade Underway Nov 10 2011 03:51PM (dterry) Ron Parker Lower Hybrid dterry,parker,wallaceg Lower Hybrid Reflectometer no off Apr 15 2011 08:24AM (dominguez) Arturo Dominguez Lower Hybrid Reflectometer dominguez,marmar,parker,sgbaek LoWEUS yes LoWEUS viewing the 10-30 nm region, spectral brightness vs. lambda and time are being stored in tree. Jan 23 2012 12:03PM (mlreinke) Matthew L. Reinke Long Wavelength Extreme Ultraviolet Spectrometer markchil,mlreinke LPI no Beam line removed May 30 2008 02:09PM (bose) Earl Marmar Lithium Pellet Injector bose,marmar Ly-alpha yes Midplane Lyman-a and LEDGE-LY working normally. New B-PORT Lyman (BPLY) still being debugged. Jan 23 2012 12:04PM (mlreinke) Matt Reinke Lyman alpha cameras faustian,labombard,mlreinke Magnetics yes   Dec 01 2011 11:51AM (g) Robert Granetz Bp coils and flux loops for equilibrium control granetz,wolfe McPherson no **vacuum system problem*** McPherson viewing the 10-14 nm region for molybdenum monitoring. It's days are numbered as LoWEUS has demonstrated superiority. Jan 31 2012 08:15AM (mlreinke) Jim Terry VUV Spectrometer markchil,mlreinke,terry Michelson yes Front end at 4.5e-8 T. Reduced speed for initial operation. Nov 30 2011 07:51AM (hubbard) Amanda Hubbard ECE Te Profiles hubbard,schmidt MKS yes   Dec 02 2011 12:27PM (toland) Brian LaBombard Baratron pressure gauges labombard,toland MLP no System is in edge lab. Version 2 drivers ready to test. Needs a student to help work on it. Jul 14 2009 09:20PM (labombard) Brian LaBombard Mirror Langmuir Probe Electronics System labombard MSE no 1/3/2011: push-pull mechanism broken. MSE inoperative Jan 03 2012 11:47AM (sscott) Steve Scott Motional Stark Effect jinseok,sscott Neutrons yes High voltage is on. We're ready for plasma. Nov 21 2011 12:58PM (fiore) Catherine Fiore Neutron Detectors fiore Neuts and Hards yes All detectors Powered On --- Waiting for neutrons for calibration Nov 22 2011 01:05PM (irby) Jim Irby X-Ray/Neutron Detectors at K-Hor irby NINJA yes C-bottom and new F-bottom system ready. Dec 02 2011 12:28PM (toland) Brian LaBombard NINJA gas puff labombard,terry,toland PCI yes Operational. Nov 30 2011 12:45PM (ntsujii) Miklos Porkolab Phase Contrast Imaging emd,ennever,ntsujii,porkolab Penning Gauges yes Operational. High voltage comes on during INIT and off at RECOOL. Dec 09 2011 09:48AM (labombard) Brian LaBombard Penning Ionization Gauges labombard Plasma TV yes WIDE1, WIDE2 (chan 33), DANT, JANT and DIV are operational. Jul 01 2009 09:46AM (terry) Jim Terry Video of plasma via several cameras dekow,irby,terry,wolfe Polarimeter yes 3 chords operational but with high noise level Jan 06 2012 04:22PM (irby) Jim Irby C-Mod Polarimeter irby Power - Alternator Air Switch yes   Jan 09 2012 06:33AM (dekow) Gary Dekow feeds all the other supplies cochran,dekow,dterry,irby Power - PEI yes   Jan 09 2012 06:33AM (dekow) Gary Dekow PEI System cochran,dekow,dterry,irby Power - TMX yes   Jan 09 2012 06:33AM (dekow) Gary Dekow Ef2s,. EFCs and A-Coils byford,cochran,dekow,dterry,irby Power Systems yes   Jan 09 2012 06:33AM (dekow) Jim Irby C-Mod Magnet Supplies byford,cochran,dekow,dterry,irby Probe Array - ISD yes Operational, except for probe #1 (open circuit) and probe #16 (not installed). Dec 09 2011 09:50AM (labombard) Brian Labombard Inner Lower Divertor Probe Array labombard Probe Array - LH yes Operational, except for bottom-D probe (open circuit). Dec 09 2011 09:52AM (labombard) Brian LaBombard Lower Hybrid Probe Array labombard Probe Array - OSD yes F-divertor ok. J-divertor ok, except for JDIV_06 which is shorted out. Dec 09 2011 09:54AM (labombard) Brian LaBombard Outer Lower Divertor Probe Array (F and J) labombard Probe Array - UDIV yes Operational except for probes #4, 5 and 13 (open) Dec 09 2011 09:56AM (labombard) Brian LaBombard Upper Divertor Probe Array labombard Reflectometer yes As of 1120105xxx, all channels are connected Jan 05 2012 09:14AM (dominguez) Earl Marmar Reflectometer dominguez,marmar Scanning Probe - ASP yes Ion Sensitive Probe head installed. Testing in piggy-back mode. Dec 20 2011 12:33PM (labombard) Brian LaBombard A-Port Scanning Probe labombard Scanning Probe - FSP yes Operational. Dec 09 2011 09:57AM (labombard) Brian LaBombard F-Port Scanning Probe labombard Scanning Probe - WASP yes A-port WASP is operational. K-port WASP is dead (all probes melted together). Dec 09 2011 09:58AM (labombard) Brian LaBombard Inner Wall Scanning Probe labombard,nsmick Shoelace Antenna yes Fixed frequency operation available (100kHz) at moderate power (< 0.5kW). Otherwise in receiver mode. Jan 11 2012 11:50AM (labombard) Brian LaBombard High-k active MHD antenna, for QCM, WCM studies golfit,labombard SOL reflectometer yes c-port waveguides operational, h-port waveguides are not. Nov 29 2011 12:04PM (cornwall) Cornwall Lau SOL reflectometer cornwall,wukitch,ylin Sparker yes New Type II sparker replaced Type I on 11/17/2011 Nov 23 2011 08:53AM (irby) Jim Irby Field Emission Preionization for C-Mod dekow,irby,parkin Surface Science Station no SSS is up to air, no safety issues Apr 14 2011 12:06PM (ochoukov) Bruce Lipschultz Radially scanning probe located on K-port blip,ochoukov TCI yes TCI Operational. Density feedback operational. Nov 10 2011 11:47AM (irby) Jim Irby Two-Color Interferometer irby,murray TS - Core yes Operating with two 50Hz lasers, precise density calibration still required. Feb 03 2012 04:04AM (jwhughes) Jerry Hughes Core Thomson scattering jrwalk,jwhughes,yma TS - Edge yes System taking data. Requires calibration. Feb 03 2012 04:05AM (jwhughes) Jerry Hughes Millimeter resolution edge Thomson scattering jrwalk,jwhughes,yma Vispec no 350 and 670 nm, 4 spatial channels Nov 28 2007 09:58AM (agraf) Alex Graf Visible Spectrometer agraf XEUS yes XEUS viewing the 1-6 nm region, spectral brightness vs. lambda and time are being stored in tree. Jan 23 2012 12:13PM (mlreinke) Matt Reinke X-ray Extended Ultraviolet Spectrometer markchil,mlreinke XTOMO yes ARRAY1->4 working normally, ARRAY5 (new core view) working but spatial calibration issues not yet resolved Jan 23 2012 12:13PM (mlreinke) Robert Granetz X-Ray Tomography faustian,granetz,mlreinke